Spark-arrester.



J. E. KNIGHT.

SPARK ARRBSTER.

APPLICATION FILED 19.12, 190g @@@fw l Ptented Jau. 12, 1909.

@uw naf/ld fi l. n u l'-5-6 7 gj- JESSE- EAPNEST KNIGHT, OF BELLINGHAM, WSHHQ'GTGIl.

To all ywhom il may concern:

Be it known that I, Jesse Eanxns'r KNIGHT, a citizen of the United Staies, and a resident of Bellingham, in the county of llvliatconi and 'State of lVashington, have invented a non`- and improved Spark-irrrester, ol which the following is a full, clear, and exact description.

The purpose of the invention is to provide novel Yfeatuies of construction for spari; arrester, that afford an adjustable canopy over tlic exhaust pipe in tlic sinokestack of a locomotive or other portable engine, whereby a concave deliector is afforded, which is connected with a sparleconductor, x 'die transfer of sparks from tlie sniolestacii to a point of' discharge, and that, when not in service, may be contracted in diameter so as to afford a draft passage ofincreased area when fuel combustion is to be effected by the natural draft of tire stack.

The invention consists in the novel construction and combination of parts, is hereinafter described and defined in an pendcd claims.

Reference is to 'be had to the accompanying drawings forming a part of this specilication, in which similar characters of reference indicate corresponding parts in all the views.

-Figure l is a sectional View of a smokestack, and an exhaust pipe therein embodying features of the invention, other details of the improvement being snown partly in section and disposed mainly above 'the exhaust pipe; Fig. 2 is an enlarged sectional side View of a smolrestack iii-part, and of tneprincipal details of the invention adjusted differently from that represented for said parte in 1, and Fig. 3 is a broken plan View of a sniokestack and a plan View of the improved spark arreser in position Within the stack.

ln the drawings, 5 represents the loody oi3 a smokestack of Well known form, comprising a cylindrical wall, wliereon is mounted an enlarged bonnet 5a, that covered with die usual screen wire hood 5b. Cen trally in the body 5 of the stack the exhaust. pipe G is vertically positioned, the lower portion ot nliicio, iliatis noi shown., having the usual connection willi branch-pipes that receive exhaust steam from the locomotive engine cylinders in tlie ordinary 'a ln the upper portion of the exhaust pipe ipeteaton of Letters Patent.

RESTE-3R..

Patented n'ia. l2, 19%. 'i'erial lilo. 6, which is cylindriea and dianietrieally l enlarged, as at 5 a tubular. guide 6b liormed or seouret centrally, said guide leav nig steam passages a intervening between its on surface and the Wallof tire enlargem nient laterally-curved spark-con 1- is a detail invention, said pipe is tapered from one e to the opposite end 'lie larger end of the spari?. conductor pipe 4' supported centrally in the 'bonnet E directly above open upper or" tlie exhaust pipo 6 a brace-oar 8, that extends across the bonnet and is secured by its ends on die side Wall eliereoi pipe passingv'lirngli a central opening in tlie oraeeoar iiflierein it is secured oy suitable means. The carved, and tapered conductor pipe 'i' is arched above the racebar 8,-and extends outwardly and downwardly through sain' brace-bar, time number of spaced ears d are formed or se cured, and upon said ears the upper ends of a pluralityv of plate metal segments 9 are hinged by their upper ends. The similar plate metal segments 9 increase in width toward their free ends, and are so relatively disposed that they lap one upon the other at their side edges when distended to form a canopy over the exhaust pipe 6, as is shown at, e in lfig. 3.

ln theA guideftnbe G1` a slide-bloeit f is loosely' itted, and is secured on the lower end of a pusher-rod g, on which is secured collar h, whereon lilze ends of a plurality of spreader' arms e' pi'voted yat equal distonces apart.' The lnumber of spreaderarrns z" is equal to tlie nuinoer of segments 9,

and said, arms are pivoted at tlieir remaining or upper ends on said wing-like segments res ectivel asshow'n at in Fin". 7 .1

llt will be seen tliai. the Weight of tlie Wings orfsegments 9 wili canseftliem fold toward each other, as indicated in F 1g. 2, this ad ustinent of arts occurrin 1when the eneine le 27 having the improved sniolrestaci; is not ningu end o tlicreot below the latter.

The o eration is as follows: Vhen the canopy ormed of the wind-segments 9 is in folded condition, ample space in the bonnet '5" is afforded for free natural draft, so that :imy re. may be started and steam raised VWhile the engine is standino'. Upon lstarting the locomotive, that mayr e a portable vor traction engine, and thus causing exhaust steam to be'expelled from the exhaust-pipe 6, the foree of the upward discharge of steam will distend the wings or segments 9 and form a canopy over the exhaust-pipe. As the distended vcanopy is of a greater width than the diameter ol the stack body 5, and is concave on the lower side thereof, it will be evi- ,dent that sparks and cinders that pass up the srnokestack will linpinge upon the lower .side of the canopy,'and thence he transferred through-the spark-conductor pipe 7 into the depending extension pipe 7i.

The perforated pipe 2'a may be extended down into the ashrpan 4of the locomotive,

.portable Ortraetion engine, thus preventing the escape of live sparks upon the road bed,

and avoiding danger of fire therefrom.

It Will he noted that as a portion ott the pipe extension (a passes through the bonnet 5, the exhaust steam may readily escape into the latter, While the sparks and cinders descend the pipe 71 by their Weight.

While the improvement is especially well adapted for service on a locomotive, portable or traction engine, it may also he utilized as a reliableeparl arrester for all 'Bte-,am generators using an enforced draft.

Having thus described my invention, I

claim as new and desire tosecure hy het ters Patent:

l. The combination With a sinolei Stack, and an exhaust pipe therein, 'of a normally folded canopy supported directly ahovei the exhaust pipe, and adapted to be expandedA by the exhaust steain expelled from the pipe. i

2. The combination l'with ay sxnokestaelc, and an exhaust pipe therein., of a folldahle canopy, supported over the e'haust pipe and which Will be distende'd by exhaust steam expelledvroin the pipe.

A combination with a sinolzestael, and an upright exhaust pipe therein, of a eanopy formed of .t'oldable Wings which are adapted for distention by exhaust steam. froinftheV exhaust steam expelled troni the exhaust pipe. x

ln testimony whereof have signed my name to this speciiication in the presence two subscribing Witnesses.

JESSE ET KNIGHT. lVitnesscs:

LIN H.V HADLEY, W. H. Aneo'r'r. 

